Trustees



(No Model.) L. GODD U.

SOLE FASTENING WIRE.

No. 262,287. Patented Aug. 8, 188.2,

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UNITED STATES PATENT OFFICE.

LOUIS GODDU, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR TO GORDON MGKAY, OFNEWPORT, RHODE ISLAND, AND JAMES W. BROOKS, OF CAMBRIDGE, MASSACHUSETTS,TRUSTEES.

SOLE-FASTENING WIRE.

SPECIFICATION forming part of Letters Patent No. 262,287, dated August8, 1882.

Application filed June 26, 1882. (No model.) 7

To all whom it may concern.-

Be it known that I, LOUIS GoDDU, of Winchester, county of Middlesex,State of Massachusetts, have invented an Improvement in Sole-Fastening\Vire, of which the following description, in connection with theaccompanying drawings, is a specification.

This invention has for its object the production of a novel Wirefor useinnailing-machines 10 for boot and shoe work wherein the said wire iscut into sole-fastenings of the proper length. This wire,prefellalllyrquadraugulai;in crosssection, has its surface between itssmooth corners serrated pr indentegl lilge a file to engage the fiber oftheleatheg and the wire is twisted axially to give it the holding powerof a screw, and also to add to itsstifi'ness and insure that thefastening cut from it will drive straight. A twisted or screw-likefasteningwhich turns axially as it is being driven w il l 1ot run orbend from a straight line when being driven through a piece of leatheras readily as would a fasteningof same cross-section if not twisted. Theserrated or indented surface of the wire effectually co-operates withthe twist put into the wire, and each adds greatly to the holding powerof the fastening made therefrom when driven into the material to beunited by it.

My invention consists in a twisted and 0 toothed or serratedsole-fastenin g wire.

Figure 1 represents in perspective a piece of plain wire from which tomake my improved wire; Fig. 2, a cross-section thereof; Fig. 3, aperspective view of the simplestform of toothed or serrated wire to betwisted in accordance with my invention; Fig. 4, a cross-section of Fig.3; Fig. 5, a longitudinal section of apiece of sole-fastening wire suchas shown in Fig. 3. Fig. 6shows the wiretwisted,ready to be wound on areel or otherwise to be used in a nailingmachine. Figs. 7, 8, 9,10, and11 represent cross-sections of different forms of sole-fastening wireserrated orindented at its sides; and Fig. 12 represents a side view ofa piece of wire 5 such as shown by the section, Fig. 7.

I first take a round or other suitable-shaped wire, a, and run itbetween roller-dies, which give to the said wire the cross-sectiondesired as, for instance, as shown by wire I) in Figs. 3

and 4 and wires 0 d e fin Figs. 7, 3, 9, l0, and 11-the said wires asthey are being rolled into either of the said shapes havigghtheirsid est0 tned-or-serrater1..hetweeeihc rea thus making a s e r ies ot;fine.teeth, bf, (seen best in Fig; 5,) which teeth are adapted to cutinto theleather, the latter contracting into the spaces between the said teeth.To further add to the holding power of fastenings to be out from thesaid toothed or serrated wires, and also to add to the stifiness thereofand enable the fastenings cut therefrom to be driven straight into andthrough leather withoutinjuriously running, as it is called, ordiverging from a straight line, the said wires are twisted, as shown atFig. 6 of the wire I). (Represented 6 in Figs. 3, 4, and 5.)

A wire havinga cross-section such as shown in either of the figures ofthe drawings, unless provided with a point exactly central with thecenter of the wire, could not be driven straight into and through theleather without a hole were made therein for its reception by an aw],and hence such a wire could not practically be used in nailing-machines,for such machines, so

far as I am aware, have no provision by which it'is possible to cut offthe wire and leave a central point; but, on the contrary, the point isleft more or less at one side of the said center.

If the wire be twisted so that the fastening cut therefrom is compelledto rotate as it is driven into the leather, the tendency of thefastening to run or be deflected to one side in its passage through thesaid leather is practically neutralized.

The surfaces which are toothed or serrated 8 5 may be somewhat concaved,as shown in the section, Fig. 11, the metal displaced in forming thesaid coucavities and the indentations between the teeth b appearing inthe smooth corners b The teeth or serrations b will be produced by teethforming part of the rolls employed in rolling the wire into the shaperequired.

I do not broadly claim a twisted wire, as I know that to be old; nor doI broadly claim a 5 toothed or serrated wire; but 1 am not aware that atoothed or serrated wire many sided or oval in cross-section has everbeen twisted.

In Fig. 7 the notched or serrated strip is oval in cross-section, inFig. 8 triangular, in Fig. 9 square or quadrangular, in Fig. 10hexagonal, and in Fig. 11 a square and concaved sides. All theseditferent forms of strips or wires are finely toothed or serrated whenbe ing rolled into the cross-sections illustrated, and each form ofstrip is then twisted, as indicated by the right-hand end of the stripin Fig. 6.

Instead of making the metal strip in the forms shown in cross-section inFig. 3 to 11, I may, without departing from my invention, adoptany otherusual many-sided form which, when the strip is cut transversely, willproduce corners which, when the strip has been toothed or serrated andtwisted, will form a

